Software Principal Engineer United States Jobs

Lead the core of Microsoft's cloud as a Principal Software Engineer on the Azure Compute team. Architect large-scale, fault-tolerant distributed systems using C, C++, C#, or Python. Drive significant impact by optimizing cluster scale, density, and utilization for global services. This role offer...

Lead the architecture for Control Plane drivers at Microsoft's Silicon team in Santa Clara. This senior role requires 6+ years in C/C++ and deep OS/kernel expertise to build scalable DPU solutions. You'll define roadmaps, mentor engineers, and impact Azure's core infrastructure.

Lead the architecture of scalable backend and ML systems to accelerate Microsoft 365 Copilot innovation. This principal role requires deep technical expertise in large-scale distributed systems and cross-team leadership. Join a focused team in Redmond to drive engineering velocity and platform ag...

Lead AI innovation for Microsoft's Dynamics 365 Contact Center as a Principal Software Engineer. Design and deploy scalable AI solutions, integrating LLMs and agentic systems on Azure. This Redmond-based role requires 6+ years of coding experience and deep expertise in GenAI. Build robust, produc...

Lead a team leveraging AI/Copilot to evolve the core Azure platform, enabling scalable and secure global expansion. This role requires 6+ years of engineering experience with distributed systems and 2+ years in people management. You will guide technical design, optimize performance, and ensure s...

Lead the critical middle-tier service powering Microsoft 365 Copilot across web, Windows, and Mac. This Redmond-based role requires a Principal Engineering Manager with 6+ years of experience and deep expertise in Azure web services. You will design APIs, infrastructure, and deployment pipelines ...

Lead architectural innovation for AI and strategic initiatives at Microsoft. This hands-on Principal Engineer role strengthens platform resiliency and drives customer-focused solutions. Requires 6+ years of coding experience in C++, C#, Python, or Java. This position is based in the United States.

Lead the development of cutting-edge, user-facing Generative AI features at Microsoft in Redmond. As a Principal Software Engineer, you'll own projects from concept to delivery, working with top brands to drive AI transformation. Requires 6+ years of experience, Python expertise, and a strong bac...

Lead the development of cutting-edge observability tools for Azure's AI/HPC supercomputers. This principal engineer role requires 6+ years of experience in C/C++/Python to ensure reliability and performance at hyperscale. Partner with stakeholders to build actionable monitoring solutions for the ...

Lead the development of a groundbreaking, planet-scale multi-modal database for AI agents at Redmond. As a Principal Software Engineer, you'll architect reliable services using C++/C#/Java and Kubernetes (AKS/EKS/GKE). Drive operational excellence, ensure SLA compliance, and mentor a team in a fa...

Lead the strategy for the Azure Portal, the unified management interface used by millions. Build scalable, secure systems using modern web technologies like JavaScript, ASP.NET, and Node.js. This role requires a Bachelor's degree and 6+ years of technical engineering experience. Join a collaborat...

Lead the transformation of Microsoft Cloud customers into fans as a Principal Software Engineer on the Azure CXP team. You will define SLOs, enhance system reliability, and leverage AI to automate operations. This role in Charlotte requires 6+ years of coding experience and expertise in cloud arc...

Lead AI security initiatives for Microsoft Edge in Redmond. This principal engineering role requires deep expertise in AI/LLM security, threat research, and practical mitigation coding. You'll provide technical leadership on complex safety scenarios and browser-integrated AI defenses. A collabora...

Lead the identity strategy for Microsoft's consumer Copilot, ensuring secure and seamless authentication across all platforms. This principal engineering role requires deep expertise in identity systems and cross-platform delivery. Join a core team in Redmond to build the trusted foundation for p...

Lead the future of data platforms at Microsoft Azure in Redmond. As a Principal Software Engineer, you'll architect core database systems like Azure SQL DB and Cosmos DB, focusing on scalability and AI-driven innovation. Mentor a talented team while shaping the infrastructure powering a new class...

Lead the architecture of Azure's global DNS platform as a Principal Software Engineer. Design high-performance, secure distributed systems and networking data paths using C/C++/Rust. Drive innovation in cloud-scale reliability, AI-driven infrastructure, and threat protection. This role offers a c...

Join Microsoft's Security Base team as a Principal Software Engineer. Develop the next-generation security fabric using C/C++/Rust in a systems programming role. Provide strategic leadership and hands-on coding to advance Microsoft's core protection stacks. This remote US position offers a chance...

Shape the future of 3D geospatial visualization as a Senior Principal Software Engineer at Cesium. Drive platform architecture for real-time graphics and 3D tiling pipelines with 12+ years of experience. This remote US role offers a hands-on leadership position influencing open standards and a wo...

Lead the development of Microsoft AI's core personalization data infrastructure. As a Principal Software Engineer, you will architect scalable distributed systems and APIs that power adaptive, context-aware experiences for Copilot. This role in Redmond demands expertise in cloud services, OSS dat...

Lead the evolution of Microsoft's core cloud services as a Principal Software Engineer for OneDrive & SharePoint. Design and deliver large-scale, distributed architectures that impact millions of users. This Redmond-based role requires 8+ years of experience in cloud-scale services, REST APIs, an...